Generate the isSVG*Element() / toSVG*Element() helper functions

Source/build/scripts/templates/ElementTypeHelpers.h.tmpl

Index: Source/build/scripts/templates/ElementTypeHelpers.h.tmpl
diff --git a/Source/build/scripts/templates/ElementTypeHelpers.h.tmpl b/Source/build/scripts/templates/ElementTypeHelpers.h.tmpl
index 91758aa6e889d33a584bb2efb6a3ad4de8dc5967..44fabd26fff88cabf286da7977e60365941a8549 100644
--- a/Source/build/scripts/templates/ElementTypeHelpers.h.tmpl
+++ b/Source/build/scripts/templates/ElementTypeHelpers.h.tmpl
@@ -11,7 +11,7 @@
 
 namespace WebCore {
 // Type checking.
-{% for tag in tags|sort if not tag.multipleTagNames %}
+{% for tag in tags|sort if not tag.multipleTagNames and not tag.noTypeHelpers %}
 class {{tag.interface}};
 void is{{tag.interface}}(const {{tag.interface}}&); // Catch unnecessary runtime check of type known at compile time.
 void is{{tag.interface}}(const {{tag.interface}}*); // Catch unnecessary runtime check of type known at compile time.
@@ -24,7 +24,7 @@ inline bool is{{tag.interface}}(const Element& element) {
     if (!RuntimeEnabledFeatures::{{tag.runtimeEnabled}}Enabled())
         return false;
 {%- endif %}
-    return element.hasTagName({{namespace}}Names::{{tag.name}}Tag);
+    return element.hasTagName({{namespace}}Names::{{tag|symbol}}Tag);
 }
 inline bool is{{tag.interface}}(const Element* element) { ASSERT(element); return is{{tag.interface}}(*element); }
 inline bool is{{tag.interface}}(const Node& node) { return node.isElementNode() ? is{{tag.interface}}(toElement(node)) : false; }
@@ -34,7 +34,7 @@ template <> inline bool isElementOfType<const {{tag.interface}}>(const Element&
 
 // Using macros because the types are forward-declared and we don't want to use reinterpret_cast in the
 // casting functions above. reinterpret_cast would be unsafe due to multiple inheritence.
-{% for tag in tags|sort if not tag.multipleTagNames %}
+{% for tag in tags|sort if not tag.multipleTagNames and not tag.noTypeHelpers %}
 #define to{{tag.interface}}(x) WebCore::toElement<WebCore::{{tag.interface}}>(x)
 {% endfor %}
 } // WebCore